The term 'Tuning Knob' can be summarized as a device used to adjust the frequency of a radio or other electronic device. It is also known as a DIAL, which is a four-letter word that can be used to describe it. The tuning knob is usually a circular knob that is turned to adjust the frequency of the device. It is often used in radios, televisions, and other electronic devices to adjust the sound or picture quality.